Apr 22, 2013 1:00am PDT
or group that claimed responsibility. >> reporter: day four, president obama comes to boston and speaks at an interfaith service telling boston the country stands with it. >> the world will return to this great american city to run harder than ever and to cheer even louder for the 118th boston marathon. bet on it. >> reporter: later that day, a break in the case. the fbi releases photos and surveillance videos of these two men walking with backpacks. at 10:48 p.m., gunshots are heard on the campus of m.i.t. in massachusetts. reports say that officer sean collier was killed. after that a black mercedes was stolen leading police on a chase. throwing grenades and pipe bombs out of the windows. one suspect, tamerlan tsarnaev was killed. day five, witnesses describe the mayhem. >> we saw the explosion. we must have heard about 60 gunshots. >> reporter: 2:40 a.m. a robo call sent to watertown incidents. >> there is an active incident in watertown right now. all watertown residents should remain in their homes. >> reporter: 4:22 a.m. a suspect on the run. >> we believe this to be a terrorist.
Apr 21, 2013 8:00am PDT
into custody, president obama had something to say about the reporting of the boston bombings. >> in this age of instant reporting, tweets and blogs, there's a temptation to latch on to any bit of information, sometimes to jump to conclusions. >> fbi earlier in the week had also complained about the inaccurate reporting. this is an instant where the government is criticizing the media. >> it's fun. and they are right. the fbi issued a smashing statement about the thing we were just talking about saying please check official channels. sometimes the government isn't too cooperative when the media knocks on their door as well. so that's a two-way street. >> and after the mistakes earlier in the week that we have talked about in the last segment, i thought i saw a note of caution creeping into these discussions. with pulled some sound from different networks to illustrate what i'm talking about. >> a lot of this is conjecture and trying to piece together and figure out motivation. >> we should quickly point out that as we saw with newtown, people do crazy things. before we leap to any conclusions